<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<SCRIPT type=text/javascript src="jquery-1.7.2.js"></SCRIPT>
<script type="text/javascript ">
function  abc(){
	//alert($("#leveloneiframe").contents().find("#leveltwoiframe")[0].contentWindow.frame2do());
	$("#leveloneiframe").contents().find("#leveltwoiframe")[0].contentWindow.frame2do();
	alert();
 
	
}

function aaa(){
alert(111);}

</script>
</head>
<body>
<input type="button" value="aaa" onclick="aaa()">
<select id="aa"  >
<option value='0'>0</option>
<option value='01'>01</option>
<option value='011'>011</option>
<option value='1011'>1011</option>
</select>
<input type="button" id="bb" value="电死我" onclick="abc()"/>
<iframe id="leveloneiframe" src="frame1.html" style ="width:300;height:500"></iframe>
</body>
</html>